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1994.5 - 1997 7.3L Power Stroke Diesel  

transmission cooler upgrade

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Old Aug 27, 2006 | 03:42 PM
  #1  
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From: Donna
transmission cooler upgrade

I'd like suggestions for a spin off filter and maybe a bypass filter for my EO4D. (EO$D ?)

I've read all and I mean ALL the threads about transmission coolers. My 95 (built 9/94) has lines from the transmission that run into the bottom tank of the radiator, then to a 4" X 15" X 1" fluid to air cooler. I rolled over to 190,000 today. Never a problem with the tranny. (knock wood!) But I would like to keep this truck forever so I was thinking about reliability upgrades. A spin off filter for the tranny seems like a good idea to me. But I want to do this once so if I was looking at cooler too. With the setup I have maybe I shouldn't need one? My engine is stock except for a Superchips tuner. I haul a truck camper and tow my Mazda B2200 at the same time. That is my normal max load.

I traced the power-steering lines out and they just made the lines longer and coiled it up on the front of the twin I-beam cross-member.
 
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Old Aug 28, 2006 | 06:14 AM
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From: MICHIGAN
After reading "all" of the tranny cooler posts you should know that anything is better than the stock fluid to air cooler. But bigger isn't always better unless you can control the temps with some sort of thermostat. That's my 2 cents, look at my signature, that's the tranny cooler I'm using....for now.

You will need a temp gage to know for sure though.

Spin-on filters will make the ATF change a little less messy, but a drain plug in the pan makes changing the ATF a breeze, something I do every 15-20k miles, especially now that I have a fresh tranny.
 
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Old Aug 28, 2006 | 06:46 AM
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From: Donna
Thanks for the reply. Thought I had hit a black hole question.

After reading all that stuff my brain just overloaded. That is what I wanted.

What temp gauge do you use and where is it installed? I mean where in the fluid path? I will search for the drain plug since it is time for a fluid change.

What is a Sonax?
 
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Old Aug 28, 2006 | 08:11 AM
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I installed a temp gauge sending unit on the left side of the transmission out of the test port, thiers a plug in the side of the trans, I read my temp thier. I kitted my trany with some trans shift kit, I dont know what brand but it included new selinoid packs, as for cooler I installed an A/C condensor from an 87 jeep cherrokee, a little hackish but dropped my trans temps down 25 degrees.

temps are running amazing and never crack 180-185 on a heavy load otherwise I was hitting 200+ with the stock liqued to air cooler, only problem I ran with the stock cooler is in the winter I would not even lift my needle off the "100 degree" mark on my gauge, I'm dropping below -30C in the winter. Now I have a bigger cooler this will be the ****s, I'm thinking of re-plumbing it to have a air to liquid cooler bypass and just run the radiator cooler in the winter and see how my temps are, if thier still to low I'm going to bite the bullit and and buy the thermostat controled cooler
 
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Old Aug 28, 2006 | 08:36 AM
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From: Donna
I'm essentialy lazy so I like when other people do the experiments!

I think I will go with the Tru_Cool with the bypass built in. I guess the 95 dosen't have a bypass built in so having one might help.

Dave what sensor and gauge did you use? Part #'s would be great.

Thanks.
 
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Old Aug 28, 2006 | 11:01 AM
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Originally Posted by sundy58

Dave what sensor and gauge did you use? Part #'s would be great.

Thanks.
I just went to a local surplus store where they carried gereral temp gauges with sending units, I picked mine up for $10, wired it in and found a spot on my dash above the little change box on the lower part of the dash to the right of the steering wheel through the black trim panel. I took the black trim panel off and had to gut some of the grey plastic re-inforcment behind it cause of clearence issues.

Guage works fine, no part number but I baught it at a "Princess Auto" store, I think these stores are only in canada.
 
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Old Aug 28, 2006 | 11:03 AM
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Originally Posted by sundy58
I'm essentialy lazy so I like when other people do the experiments!


Thanks.
The only way to have fun, but cautious doing it, before I installed the cooler I installed the gauge, when I had everything together the cooler worked good for 3 days but temp started sky rocketing(190 degrees empty), found I had a blockage with an incompatible O-ring that swelled up and was restricting oil flow, the gauge already saved me a transmission.
 
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